525220770 has 32 divisors (see below), whose sum is σ = 1287353088. Its totient is φ = 137078528.

The previous prime is 525220757. The next prime is 525220771. The reversal of 525220770 is 77022525.

525220770 = 227² + 228² + ... + 1166².

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (525220771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184839 + ... + 187658.

It is an arithmetic number, because the mean of its divisors is an integer number (40229784).

Almost surely, 2^525220770 is an apocalyptic number.

525220770 is an abundant number, since it is smaller than the sum of its proper divisors (762132318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525220770 is a wasteful number, since it uses less digits than its factorization.

525220770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372554.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 525220770 is about 22917.6955647814. The cubic root of 525220770 is about 806.8273854647.

The spelling of 525220770 in words is "five hundred twenty-five million, two hundred twenty thousand, seven hundred seventy".